Derail



S. W. HAYES.

DERAIL.

APPLICATION FILED IAN. 2. I918.

Patented June 17, 1919.

III/1 onrc- STANLEY W. HAYES, OF RICHMOND, INDIANA.

DERAIL.

To all whom it may concern:

Be it known that I, STANLEY W. HAYEs, United States citizen, residing in Richmond, Indiana, have invented the following-described Improvements in Derails.

The invention is an improved organiza tion of the bearings in that type of derails in which the derail block advances with an up and over movement toward the rail and consists in providing the derail block with a three-point support upon its base and in certain details incident thereto as hereinafter made apparent, being an improvement in some respects, upon my prior Patents No. 1,007,102 of October 31, 1911 and 1,185,663 of June 6, 1916, to which reference may be had for the principles here involved.

In the drawing Figure 1 is a partly sectional perspective view of the new derail in open position;

Fig. '2 is a separate view of the derail block;

Fig. 3 is a larger scale end view and section of the derail member and base illustrating the rear bearing; and

Fig. 1 is a vertical longitudinal section of the base with the derail in elevation and in which is the base 2which is formed with lateral spike-flanges '3 by which it is attached to two adjacent ties, side-walls 4, and a roofed rear portion 5, all braced together with appropriate angle ribs as customary. The other part of the derail is the derailing member proper which has a head or derail block 7 to engage the rail, a reduced tail or rear body portion 9 and connection lugs 22 for attachment to the operating or controlling connections.

As in my earlier derails, the derail block has a vertical component in its motion toward and from the rail, which is imparted to it in the present case by the sliding of the depending shoulders 10 of the derailing member'upon two opposite inwardly proj ecting ledges 12 cast on the side-walls 4 of the.

permit the use of very long derail blocks with maximum stability, and although they are physically separated from each other, for economy, it will be nevertheless appa'r- Specification of Letters Patent.

Patented June 17, 1919.

Application filed. January 2, 1918. Serial No. 209,841.

ent that they are broadly equivalent to a single front support laterally extended to such distance on either side of the central aX1s as to give the necessary stability, it be ing also apparent that the benefits of my invention may be obtained from various kinds of forward support for the derailing member. As the derail block seats on the rail head, the shoulders 10 ride 01% of the ledges l2 and occupy a space between the forward ends 11 of the side-walls of the base sired, constitute supporting means for said member.

The rear support of the derailing member comprises a single central slideway bearing, of which the track or slideway element is by preference disposed on the derailing meniber itself and the other element on the end part of the base member and the line of contact between the supporting andsupported elements of this bearing is also by preference disposed well above the level of the center of gravity of the rear part 9 of the derailing member so that, in this preferred form, the rear bearing is a suspension bearing and the said member, while free to slide and tilt slightly, has nevertheless a tendency always to assume and maintain a definite position by the effect of gravity. For this purpose the derailing member is formed with an up standing rib structure 15 having a laterally overhanging lip 16 undercut sufficiently to give the structure a hook-shaped section as indicated in Fig. 3. The end of the hook is rounded and its lower face is smoothed off to bear on the upper face of a lug 17 on the base, the contact being located in the central, longitudinal, vertical plane ofthe derail. An upper lug 18 on the roof structure of the base serves as a retainer for the hook, being assisted in this capacity by a straight longitudinal rib 19 on the derailing member adapted to coact with the side 20 of the hook recess in the end-wall of the base. The track or slideway element of the hook bearing is equal in length to something more than the traverse or stroke of the derailing member and the two parts are assembled by sliding the derailing member, tail first, into the hook recess in the base after which it is confined therein by the obstruction represented by the rail when the device is installed on the road-bed. It will be understood that the various lugs and bearing faces, especially the lug 17, are all appropriately rounded either in the initial casting or afterward so that the derailing member will ride smoothly to its open and closed position. And it will be apparent also that with this type of rear bearing the rear end of the derailing member can be made relatively narrow as respects the forward part of the member which is relatively wide where it is engaged by the base. IVhile the rear bearing is shown as having its trackway elements on the top of the derailing member and engaging a short bearing or lug such as 17 on the base, it will be apparent that this arrangement might be reversed, so that the trackway element will be on the base and be engaged by a hook bearing on the moving member, such reversal requiring however, a longer base casting. It will also be evident that by confining the lateral guiding of the rear portion of the member substantially to the central vertical plane, the advantages as to overcoming side cramping set forth in my Patent No. 1,007,102 are realized to an even greater degree; in addition to this the three-point bearing insures a free working derail with a minimum of machine work required in its assembly and presenting a structure the least likely to be affected by warping of the castin Claims:

1. A derail comprising a derailing member supported and guided at one end upon a laterally extended bearing means adapted to impart a vertical movement to said member in its advance toward the rail, and at its other end upon a central, single, slideway bearing shaped to accommodate such move ment.

2. A derail comprising a derailing member formed with a central single upstanding longitudinal rib structure constituting a bearing on which it is supported to slide toward and from the rail.

3. A derail comprising a base and a derailing member guided thereon upon a sliding bearing, the contacting surfaces whereof are disposed above the level of the center of over movingderailing member having de-' pending attachment means, forward bearing means therefor, an elevated central rear bearing therefor and guide rails to prevent jumping of said member 7. In a derail, a derailing member supported 011 its base on three points, one of said points being a sliding bearing with its contacting or sliding surfaces disposed in the longitudinal, central, vertical plane of the derail.

ported on three points on its base, one of said points being an elevated, central, rear, suspension bearing.

9. A derail, comprised complete of two cast parts, to wit, a derailing member relatively wide at its forward end and narrower at its rear end and a base formed'with later ally separated bearing surfaces for said forward end and a bearing recess to receive said narrow rear end, the engagement surfaces of said rear end and recess being intersected by the central plane of the derail.

10. A derail comprising a base and a de railing member having a trackway hookshaped in cross section thereon, and a lug on the base supporting said trackway;

11. In a derail of the type described, a

base having forward laterally supported bearing surfaces and a rear central elevated bearing lug, and a derailing member engag= ing said surfaces and'havlng a rib running along its rear upper surface and formed to slide on the upper face of said bearing lug.

. 12. A derail comprising a roofed base formed with a central recess-bearing in its rear portion, and a derailing member provided upon its upper surface with a longitudinal rib structure having a laterally pr jecting head engaging with said recess-bear- 1ng.

specification.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. V

In testimony whereof, I have signed this s5 8. Ina derail, a derailing member sup- 

